Abstract
A novel cathode configuration that promotes the mass transports through the cathode of air-breathing direct methanol fuel cell is reported in this paper. This cathode, free of the support by conventional wet-proof carbon fiber backing, adopts a gold-plated Ni mesh as the air passages and the current collector. The cathode microporous layer , which plays the role of air diffusion and water management, is applied on the catalyst-coated membrane through the decal method. The mesh is combined with the MPL by hot-pressing procedure to form the cathode diffusion medium. The remarkable improvement of two-phase diffusions at cathode results in an increment in maximum power density of the single cell from 11.0 to 15.5 mW cm−2 at 293 K. Copyright © 2008 John Wiley & Sons, Ltd.
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